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Radiant Floor Loop Calculator
Room area plus tube spacing gives number of loops and total PEX feet.
Loops needed
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- Total PEX (ft)
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- PEX per loop (ft)
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- Manifold ports
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FAQ
PEX size? +
1/2 inch PEX is standard for residential radiant floor loops.
Max loop length? +
300 ft for 1/2 inch PEX. Longer loops have too much pressure drop and uneven temperatures.